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20 resultsShowing papers similar to Utilization of chitosan as a natural coagulant for polyethylene microplastic removal
ClearOptimisation of Chitosan as A Natural Flocculant for Microplastic Remediation
Laboratory tests found that chitosan — a natural, biodegradable material derived from shellfish — can remove 68.3% of microplastics from water using a coagulation-flocculation process, with an optimal concentration of 30 ppm. Higher chitosan doses increased organic matter in the water (COD and BOD), suggesting a trade-off between microplastic removal efficiency and water quality parameters. Chitosan offers a promising eco-friendly alternative to synthetic chemicals for treating microplastic-contaminated water.
Interaction of chitosan with nanoplastic in water: The effect of environmental conditions, particle properties, and potential for in situ remediation
Researchers tested chitosan — a natural polymer derived from shellfish — as a tool to aggregate and remove nanoplastic particles from water, finding it caused clumping at low doses but that high pH, dissolved organic matter, and surface chemistry of the plastics all affected its performance. The results suggest chitosan-based treatment has real potential for water remediation but requires careful tuning of environmental conditions.
The use of chitosan for water purification from microplastics
Researchers investigated chitosan as a sorbent for removing microplastics from water, analyzing its physicochemical properties and proposing an optimized purification method based on chitosan's sorption characteristics.
Coagulative removal of microplastics from aqueous matrices: Recent progresses and future perspectives
This review examines how coagulation, a common water treatment technique, can be used to remove microplastics from water. Researchers compared the effectiveness of different coagulants, finding that natural options like chitosan and protein-based coagulants achieved removal rates above 90 percent. The study highlights the promise of natural coagulants as a more sustainable approach to tackling microplastic contamination in water treatment systems.
Synergistic removal of microplastic fibres: Integrating Chitosan coagulation in hybrid water pre-treatment systems
Microplastic fibers are the most common type of microplastic found entering water treatment plants, yet their elongated shape makes them especially hard to remove with conventional filters. This study investigated using chitosan — a natural, biodegradable material derived from crustacean shells — as a "green" coagulant to clump fibers together so they can be more easily removed, and also developed chemically modified versions of chitosan that work across a wider range of water conditions. The results showed that combining chitosan-based coagulation with microbubble aeration creates a synergistic pretreatment system that significantly improves microplastic fiber removal while avoiding the residual metal ions left by conventional chemical coagulants.
Synergistic removal of microplastic fibres using hybrid pre-treatment: evaluation of Chitosan as a green coagulant
Researchers evaluated the capacity of existing water treatment pre-treatment methods to remove microplastic fibers and investigated chitosan — a low-molecular-weight, 75-85% deacetylated green coagulant — as an alternative to conventional chemical coagulants. The study assessed a hybrid pre-treatment approach, finding synergistic microplastic fiber removal efficiency when chitosan was combined with existing processes.
Optimizing biocoagulant aid from shrimp shells (Litopenaeus vannamei) for enhancing microplastics removal from aqueous solutions
This study investigated chitosan derived from shrimp shell waste as a biocoagulant for removing microplastics from water, optimizing the coagulation-flocculation process to maximize particle capture. The results showed high removal efficiency, offering a biodegradable and sustainable approach to microplastic water treatment.
Coagulative removal of polystyrene microplastics from aqueous matrices using FeCl3-chitosan system: Experimental and artificial neural network modeling
Scientists developed a water treatment method combining iron chloride and chitosan (a natural substance from shellfish) that removed up to 99.8% of polystyrene microplastics from water. The method worked effectively even on real wastewater from treatment plants, not just laboratory-prepared samples. This is a promising and practical approach for adding microplastic removal as a step in existing water treatment systems, which could help reduce human exposure through drinking water.
Utilization of chicken eggshell and chitosan as coagulants for microplastic removal from aquatic system
This study tested chicken eggshell powder and chitosan as natural coagulants for removing microplastics from water, finding that both materials effectively aggregated plastic particles and settled them from suspension, offering low-cost and biodegradable alternatives to synthetic coagulants.
Efficient removal of polystyrene microplastics from seawater using a chitosan-activated carbon nanocomposite: Preparation of the adsorbent and optimisation of removal methods
Scientists created a new material that can remove up to 99% of tiny plastic particles (called microplastics) from seawater by mixing two natural substances - chitosan (from shellfish) and activated carbon. This filtering material can be cleaned and reused at least five times, making it a promising tool for removing plastic pollution from our oceans. Since microplastics can enter our food chain through seafood and sea salt, better ways to clean them from seawater could help protect human health.
Chitosan: A Novel Approach and Sustainable Way to Remove Contaminants and Treat Wastewater
This review examines how chitosan, a natural material derived from crustacean shells, can be used to remove pollutants including microplastics, heavy metals, and pesticides from wastewater. Chitosan's chemical structure allows it to bind and capture a wide range of contaminants, and it can be combined with other materials to improve its effectiveness. Developing affordable, biodegradable water treatment materials like chitosan could help reduce human exposure to microplastics in drinking water.
Harnessing the power of amphoterically modified Chitosan coagulants for enhanced Polyester microplastic fibre removal from water
Amphoterically modified chitosan was used as a coagulant aid to capture microplastics from water, leveraging the biopolymer's charge-switching ability to bind particles across a range of pH conditions. Chitosan-based capture materials are attractive because chitosan is biodegradable and derived from renewable sources.
Utilizing Chlorella vulgaris algae as an eco-friendly coagulant for efficient removal of polyethylene microplastics from aquatic environments
Researchers tested the green algae Chlorella vulgaris as an eco-friendly coagulant for removing polyethylene microplastics from water. Using optimized experimental conditions, they achieved a removal rate of nearly 99% under the best parameters. The study suggests that algae-based coagulation offers a cost-effective and sustainable alternative to chemical methods for cleaning microplastic-contaminated water.
Enhanced removal of microplastic fibres using aluminium and chitosan-based coagulants assisted with microbubble technology
Researchers tested the removal of microplastic fibers from water using aluminium-based and chitosan-based coagulants combined with sedimentation and microbubble flotation techniques. The aluminium coagulant achieved the highest removal rate of 88% through sedimentation in humic acid-containing water, while chitosan achieved 78% removal using microbubble flotation at a lower dosage. The findings suggest that the natural coagulant chitosan has potential as an effective and greener alternative for microplastic fiber removal in water treatment.
Integrated Chitosan-based coagulation and microbubble pre-treatment for improved microplastic fibre removal from water
Researchers developed a combined chitosan-based coagulation and microbubble pre-treatment system for removing microplastic fibres from water, finding that this approach overcame the limitations of conventional inorganic coagulants and improved removal efficiency for the morphologically challenging fibre fraction.
Biodegradable and re-usable sponge materials made from chitin for efficient removal of microplastics
Researchers developed biodegradable sponges made from chitin, a natural material, that can effectively remove tiny microplastic particles smaller than 3 micrometers from water. The sponges achieved removal rates of up to 92% and could be reused for multiple cycles while remaining safe for aquatic organisms. This green approach offers a promising, environmentally friendly method for cleaning microplastics from water systems.
Formulation of a Chitosan-Laccase-Cutinase Composite for Bio-Coagulation and Enzymatic Degradation of Microplastics
Researchers developed a sustainable bio-coagulant using chitosan combined with laccase and cutinase enzymes to capture and break down microplastics in water. The chitosan-enzyme composite demonstrated effective coagulation and enzymatic degradation of microplastic particles, offering a more environmentally friendly alternative to conventional removal methods.
Removal of microplastics from water by coagulation of cationic-modified starch: An environmentally friendly solution
Researchers developed a cationic-modified starch bio-coagulant as an eco-friendly method for removing microplastics from water, achieving an average removal rate of over 65% for polystyrene particles. The starch-based treatment was effective across a wide range of water pH levels and performed well in natural water samples from China's Yangtze River Delta. The study offers a sustainable and cost-effective approach for addressing microplastic contamination in water systems.
Ingesting chitosan can promote excretion of microplastics
Researchers found that feeding rats chitosan (a natural fiber derived from shellfish shells) along with microplastics significantly sped up the excretion of the plastic particles from their bodies. The chitosan appeared to bind to the microplastics in the gut and help move them out more quickly through the digestive system. This is a promising finding because it suggests that a readily available dietary supplement could help reduce the amount of microplastics that accumulate in the body.
Overlooked role of aged cationic natural organic matter in aquatic microplastics aggregation-sedimentation
Aged cationic chitosan (a natural biopolymer) was found to drive aggregation and sedimentation of both conventional polystyrene and biodegradable PMMA microplastics more effectively than other forms of organic matter, revealing a previously overlooked mechanism for microplastic removal in natural waters.